Experimental study of the γp→ηp reaction with the Crystal Ball detector at the Mainz Microtron (MAMI-C) (CROSBI ID 166973)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
McNicoll, E.F. ; Prakhov, S. ; Strakovsky, I.I. ; Aguar-Bartolomé, P. ; Akasoy, L.K. ; Annand, J.R.M. ; Arends, H.J. ; Arndt, R.A. ; Azimov, Ya.I. ; Bantawa, K. ; Beck, R. ; Bekrenev, V. ; Berghäuser, H. ; Braghieri, A. ; Branford, D. ; Briscoe, W.J. ; Brudvik, J. ; Cherepnya, S. ; Codling, R.F.B. ; Demissie, B.T. ; Downie, E.J. ; Drexler, P. ; Fil'kov, L.V. ; Fix, A. ; Glazier, D.I. ; Gregor, R. ; Hamilton, D. ; Heid, E. ; Hornidge, D. ; Jaegle, I. ; Jahn, O. ; Jude, T.C. ; Kashevarov, V.L. ; Kellie, J.D. ; Keshelashvili, I. ; Kondratiev, R. ; Korolija, Milorad ; Kotulla, M. ; Koulbardis, A. ; Kruglov, S.P. ; Krusche, B. ; Lisin, V. ; Livingston, K. ; MacGregor, I.J.D. ; Maghrbi, Y. ; Manley, D.M. ; Marinides, Z. ; Martinez, M. ; McGeorge, J.C. ; McKinnon, B. ; Mekterović, Darko ; Metag, V. ; Mićanović, Saša ; Middleton, D. ; Mushkarenkov, A. ; Nefkens, B.M.K. ; Nikolaev, A. ; Novotny, R. ; Ostrick, M. ; Otte, P.B. ; Oussena, B. ; Paris, M.W. ; Pedroni, P. ; Pheron, F. ; Polonski, A. ; Robinson, J. ; Rosner, G. ; Rostomyan, T. ; Schumann, S. ; Sikora, M.H. ; Sober, D.I. ; Starostin, A. ; Suarez, I.M. ; Supek, Ivan ; Thiel, M. ; Thomas, A. ; Tiator, L ; Unverzagt, M. ; Watts, D.P. ; Werthmüller, D. ; Workman, R.L. ; Zamboni, Ivana ; Zehr, F.
engleski
Experimental study of the γp→ηp reaction with the Crystal Ball detector at the Mainz Microtron (MAMI-C)
The γp → ηp reaction has been measured with the Crystal Ball and TAPS multiphoton spectrometers in the energy range from the production threshold of 707 MeV to 1.4 GeV (1.49 <= W <= 1.87 GeV). Bremsstrahlung photons produced by the 1.5-GeV electron beam of the Mainz Microtron MAMI-C and momentum analyzed by the Glasgow tagging spectrometer were used for the η-meson production. Our accumulation of 3.8 × 10^6 γp → ηp → 3π0p → 6γp events allows a detailed study of the reaction dynamics. The γp → ηp differential cross sections were determined for 120 energy bins and the full range of the production angles. Our data show a dip near W = 1680 MeV in the total cross section caused by a substantial dip in η production at forward angles. The data are compared to predictions of previous SAID and MAID partial-wave analyses and to the latest SAID and MAID fits that included our data.
photoproduction; Crystal Ball; Delta resonance
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Podaci o izdanju
82 (3)
2010.
035208-1-035208-12
objavljeno
0556-2813
10.1103/PhysRevC.82.035208
